Coil-bending tool



5 April 22, 1930.

A P. WATTS con; BENDING TOOL Filed Dec. 20. 1926 I Patented Apr. 22, 1930 UNETE- STATES AARON IP. WATTS, OF LOS ANGELES, CALIFORNIA ooIL-BENDInG TOOL Application filed. December 20, 1926. Serial No. 155,913.

This invention relates to coil wire bend-v ing tools. An object of this invention is to provide a tool which is adapted to give the end of a coil wire on an armature the proper bend or set after the same has been inserted into its respective slot.

Another object of this invention is to provide a coil Wire bending tool whichis adjustable and which is suited for use by an electrician in winding armatures of different shapes and sizes.

A further object of this invention is to provide a tool which is eflicient, inexpensive to manufacture and which well serves the purpose to which it is adapted.

With the'foregoing and other objects in view which will be made manifest in the following detailed description and specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein:

Figure 1 is a plan view of my wire bending. device in assembled relation, I

Fig. 2 is a side view taken from Fig. 1 looking to the right of the figure,

Fig. 3 is a plan view similar to Fig; 1 showing the device holding the wire in its bent position,

Fig. 4is a detail view of the wire in its place in the bending slot,the rest of the device being broken away,

Fig. '5 is a sectional view taken along the line 5-5 of Fig. 1,

Fig. 6 is a sectional view taken on the line 66 of Fig. 1, and

Fig. 7 is a plan view of a piece of wire, the same having been bent into position for insertion in its respective slot.

Referring to the accompanying drawings wherein similar reference characters designate similar parts throughout, I have shown a pair of parallel'rods 1 and 2. These rods are pivoted at a point intermediate their ends by an adjustable link 3 which link is formed of two sections 4 and 5, the section 4 having slots 6 and 7 therein and the section 5 having set screws 8 extending through the slots, whereby the distance between the parallel bars may be adjusted. This link is secured in place between the two parallel bars by suitable straps 9 and 10 which are adjustable by means of set screws 11 along the length of the rods 1 and 2 as shown in Fig. 1. 7 i

The ends of the rods 1 and 2 are similarly pivoted together by means of a link 12 also formed of two sections 13 and 14, which sections are similarly adjustable by means of the sl0ts.15 and 16and set screws 17 and 18. The section 13 is provided with an exten-' sion 19 which serves as ahandle. The straps to which the link is pivoted are permanently formed on the ends of the rods 1 and 2. These straps are formed with upstanding flanges20 and 23, 21 and 22 respectively. The link 12 is similarly provided with an upstanding flange 24 and the link 13 is providedwith a similar parallel flange 25. The flanges 20, 25 and 21 form with the flanges 23, 24 and 22 a narrow elongated channel 26, which channel is adapted to receive the end of, a wire 27. Between the flanges is an adjusting member 28 which determines the. position of the wire in the channel 26.

An adjusting member 29 adapted to form an abutment for the medial portions of the rod 1 is adjustably mounted on the rod 2 and so oriented that the adjusting screw 30 may come into contact with rod land limit the bending of the wire in the channel 26.

The operation of my device is as follows: The end of a piece of wire is inserted in the channel 26' until the end of the same abuts the adjusting member 28. The handle 19 and incidentally the link section 13 are then swung by means of the handle 19 in either direction out of alignment with the straps, thereby distorting the channel in which the 9 wire is resting and consequently bending the wire into the position shown in Fig. 7 During this operation the rods 1 and 2 maintain their substantially parallel relationship but are moved longitudinally of each other. angles A and B shown in Fig. 7 and. representing bends in the wire may be increased or diminished as desired by turning the adjusting screw 30 to limit the approach'of the rods 1 1 and 2. It is evident that any adjustment The. V

of the screw 30 afiects the degree of both angles A and B. The length of the portion C shown in Fig. 7 may be adjusted by means of the link sections 4: and 5 and 13 and 1A and their respective set screws. Further adjustment of the angles A and B may be had by means of the set screws 11, whereby the straps 9 and 10 may be swung longitudinally of the rods 1 and 2. A still further adjustment is possible by merely shortening the link sections A and 5 and allowing the link sections 13 and 14: to retain their original relationship. lhis would tend to decrease the angle A and increase the angle B when the handle 19 is moved into the position shown in Fig. 3, but would tend to reverse this result when the handle 19 was moved to the left.

t is obvious then that l have provided a wire bending tool which is capable oi a plurality of adjustments and which is efiicient in its operation and which is very useful to an electrician in the process of armature winding. In actual experience winding large armatures wherein the wires must be bent by hand and l tted to their respective slots the entire process occupies anywhere from sixteen to twentyiour hours, but with the use of my novel bending tool the length of time and consequently the expense of la bor, etc. may be considerably decreased. .1 do not, however, desire to limit the use of my tool merely to bending wires to fit armatures,

'as my tool is capable of use in other arts and industries.

It will be understood that various changes in the detail of construction may be made without departing from the spirit and scope claims.

I claim:

1. A wire bending tool comprising two substantially parallel rods, three-part adj ustable links connecting said rods,'and means of the invention as defined by the appended carried by certain of said links for bending a wire to form two straight parallel portions and a stralght connecting portion arranged obliquely with respect to said parallel portions.

2. A wire bending tool comprising two substantially parallel rods, three-part links connecting said rods and adjustable as to length, and means carried by certain of said links for bending a wire.

3. A wire bending tool comprising a pair of substantially parallel rods, straps on said rods, adjustable links connecting said straps, parallel flanges on certain of said links adapted to retain a wire therebetween, and means comprising a handle member associated with one of said adjustable links for distorting the wire. 7

A. A wire bending tool comprising a pair of substantially parallel rods, straps on said rods, a link adustable as to length connecting said straps, means associated with one of said links and certain of said straps for bending a wire into a predetermined position.

5. A wire bending tool comprising a pair of substantially parallel rods, pairs of straps on said rods, an adjustable link connecting each pair of straps, means associated with said link and a pair of said straps for bending a wire into a predetermined position.

6'. A wire bending tool comprising a pair of substantially parallelrods, pairs ofstraps on said rods, an adjustable link connecting each pair of straps, means associated with said link and a pair of said straps for bending a wire into a predetermined position, and adjusting means for limiting the bend of said wire.

7..A bending tool comprising a pair of substantially parallel rods, a strap on one end of each of said rods, an adjustable link connecting said straps, said links comprising straps being ,connectedby 'a' second adjustable link, said link comprising two sections slidable upon each other and adapted to be secured in position by set screws, parallel flanges on said first mentioned strap, flanges on sections of said first mentioned link, said flanges defining a channel therebetween adapted to receive the end of a straight piece of wire, a handle on one of the sections of said last mentioned link means whereby movement of the handle will causedistortion of the channel and wire therein, and an adjusting member secured to one of said rods adapted to abut the other of said rods to limit the movement thereof.

8'. A wire bending tool comprising'two sub- 'pivotally connected to said wire receiving means, and means for moving said rods relatively to each other in parallel.

9. A wire bending tool comprising a pair of substantially parallel rods, a wire receiving strap rigidly mounted on each of said rods, a link having its ends pivoted to said straps, said straps and said links being provided with a groove for the reception of the wire, and means for moving said rods relatively to each other in parallel.

10. A bending tool comprising two rods, links pivotally connecting the rods enabling them to be shifted relatively to each other but remain parallel during the shifting, means on each rod adapted to receive a wire, one of said links being shaped to receive the por-. tion of the wire between the rods, and means for shifting the rods longitudinally with respect to each other. i

11. A bending tool'comp'rising two rods, links pivotally connecting the rods enabling them to be shifted relatively to each other but remain parrallel during the shifting, means on each rod adapted to receive a wire, one of said links being shaped to receive the portion of the wire between the rods, said link having a handle by which the rods may be 1{shifted longitudinally with respect to each ot er.

12. A bending tool comprising two rods, links pivotally connecting the'rods enabling them to be shifted relatively to each other but remain parallel during the shifting, means on each rod adapted toreceive a wire, one of said-links being shaped to receive the portion of the wire between the rods, and means for shifting the rods longitudinally with respect to each other, said links being adjustable as to length. l

13. A bending tool comprising two rods,

links pivotally connecting the rods enabling 7 them to be shifted relatively to each other but remain parallel during the shifting,

means on each rod adapted to receive a Wire,

one of said links being shaped to receive the portion of the wire between the rods, means for shifting the rods longitudinally with respect to each other, and adjustable means limiting the approach of said rods toward each other.

In testimony whereof I have signed my name to this specification.

AARON P. WATTS. 

